94 lines
3.2 KiB
C++
94 lines
3.2 KiB
C++
/*****************************************************************************
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*
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* This file is part of Mapnik (c++ mapping toolkit)
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*
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* Copyright (C) 2011 Artem Pavlenko
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*
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*****************************************************************************/
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// mapnik
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#include <mapnik/feature.hpp>
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#include <mapnik/agg_renderer.hpp>
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#include <mapnik/graphics.hpp>
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#include <mapnik/label_collision_detector.hpp>
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namespace mapnik {
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void draw_rect(image_32 &pixmap, box2d<double> const& box)
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{
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int x0 = static_cast<int>(box.minx());
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int x1 = static_cast<int>(box.maxx());
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int y0 = static_cast<int>(box.miny());
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int y1 = static_cast<int>(box.maxy());
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unsigned color1 = 0xff0000ff;
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for (int x=x0; x<x1; x++)
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{
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pixmap.setPixel(x, y0, color1);
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pixmap.setPixel(x, y1, color1);
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}
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for (int y=y0; y<y1; y++)
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{
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pixmap.setPixel(x0, y, color1);
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pixmap.setPixel(x1, y, color1);
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}
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}
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template <typename T0, typename T1>
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void agg_renderer<T0,T1>::process(debug_symbolizer const& sym,
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mapnik::feature_impl & feature,
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proj_transform const& prj_trans)
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{
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debug_symbolizer_mode_enum mode = get<debug_symbolizer_mode_enum>(sym, keys::mode, feature, common_.vars_, DEBUG_SYM_MODE_COLLISION);
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if (mode == DEBUG_SYM_MODE_COLLISION)
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{
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typename detector_type::query_iterator itr = common_.detector_->begin();
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typename detector_type::query_iterator end = common_.detector_->end();
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for ( ;itr!=end; ++itr)
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{
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draw_rect(pixmap_, itr->box);
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}
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}
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else if (mode == DEBUG_SYM_MODE_VERTEX)
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{
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for (auto const& geom : feature.paths())
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{
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double x;
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double y;
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double z = 0;
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geom.rewind(0);
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unsigned cmd = 1;
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while ((cmd = geom.vertex(&x, &y)) != mapnik::SEG_END)
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{
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if (cmd == SEG_CLOSE) continue;
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prj_trans.backward(x,y,z);
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common_.t_.forward(&x,&y);
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pixmap_.setPixel(x,y,0xff0000ff);
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pixmap_.setPixel(x-1,y-1,0xff0000ff);
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pixmap_.setPixel(x+1,y+1,0xff0000ff);
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pixmap_.setPixel(x-1,y+1,0xff0000ff);
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pixmap_.setPixel(x+1,y-1,0xff0000ff);
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}
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}
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}
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}
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template void agg_renderer<image_32>::process(debug_symbolizer const&,
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mapnik::feature_impl &,
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proj_transform const&);
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}
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